[The Sunflower Family in the Cascade Mountains of Oregon and Washington]

Members of the Sunflower Family in the Cascade Mountains of Oregon and Washington with Discoid Flower Heads

(generally, ray flowers are lacking)

Snakeroot, Western Snakeroot, Western Boneset: Ageratina occidentalis

Western Boneset: Ageratina occidentalis

Trailplant, Trail Plant, Pathfinder: Adenocaulon bicolor -

Snakeroot, Western Snakeroot, Western Boneset: Ageratina occidentalis (Synonym: Eupatorium occidentale) -

Pearly Everlasting, Western Pearly Everlasting: Anaphalis margaritacea (Synonyms: Anaphalis margaritacea var. margaritacea, Anaphalis margaritacea var. occidentalis, Anaphalis margaritacea var. subalpina, Gnaphalium margaritaceum) -

Pussytoes: The Genus Antennaria -

Common Burdock: Arctium minus -

Arnicas: The Genus Arnica -

Mugworts and Wormwoods: The Genus Artemisia -

Beggar-ticks: The Genus Bidens -

Silvercrowns: The Genus Cacaliopsis -

Thistles: The Genus Carduus -

Knapweeds: The Genus Centaurea -

Dusty Maidens: The Genus Chaenactis -

Thistles: The Genus Cirsium -

Horseweed Conyza canadensis var. glabrata - Rays are present but tiny.

Daisies and Fleabanes: The Genus Erigeron -

Filagos: The Genus Filago -

Purple Cudweed: Gamochaeta ustulata -

Cudweeds: The Genera Gamochaeta, Gnaphalium and Pseudognaphalium -

Oregon Goldenaster: Heterotheca oregona (Synonyms: Chrysopsis oregona, Chrysopsis oregona var. oregona, Chrysopsis oregona var. rudis, Heterotheca oregona var. oregona, Heterotheca oregona var. rudis) -

Cottonroses and Cottonweeds: The Genus Logfia -

Silverback Luina and Silvercrown: The Genus Luina -

Mayweeds and Pineapple-weeds: The Genus Matricaria -

Butterweeds and Groundsels: The Genus Packera

Butterburrs and Coltsfoots: The Genus Petasites -

Woollyheads: The Genus Psilocarphus -

Columbia Goldenweed, Rayless Goldenweed: Pyrrocoma carthamoides var. carthamoides (Synonyms: Haplopappus carthamoides ssp. carthamoides, Haplopappus carthamoides ssp. rigidus, Haplopappus carthamoides var. carthamoides) -

Raillardellas: The Genus Raillardella -

False Silverback, Rainiera, Tongue-leaved Luina, Tongue-leaf Luina: Rainiera stricta (Synonym: Luina stricta) -

Coneflowers: The Genus Rudbeckia -

American Sawwort, American Saw-wort: Saussurea americana -

Butterweeds and Groundsels: The Genus Senecio -

Prickly Sow-thistle: Sonchus asper ssp. asper -

Common Sow-thistle: Sonchus oleraceus -

Common Tansy: Tanacetum vulgare -

Paul Slichter E-mail